Finite-Temperature Disordered Bosons in Two Dimensions

被引：11

作者：

Bertoli, G. ^{[1
]}

Michal, V. P. ^{[2
,3
]}

Altshuler, B. L. ^{[4
]}

Shlyapnikov, G. V. ^{[1
,5
,6
,7
,8
]}

机构：

[1] Univ Paris Saclay, Univ Paris Sud, CNRS, LPTMS, F-91405 Orsay, France

[2] Delft Univ Technol, QuTech, NL-2600 GA Delft, Netherlands

[3] Delft Univ Technol, Kavli Inst Nanosci, NL-2600 GA Delft, Netherlands

[4] Columbia Univ, Dept Phys, 538 West 120th St, New York, NY 10027 USA

[5] Univ Paris Saclay, CEA Saclay, CNRS, SPEC,CEA, F-91191 Gif Sur Yvette, France

[6] Russian Quantum Ctr, Skolkovo 143025, Moscow Region, Russia

[7] Univ Amsterdam, Van der Waals Zeeman Inst, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands

[8] Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Hubei, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 121卷 / 03期

基金：

欧洲研究理事会;

关键词：

ANDERSON LOCALIZATION; 2-DIMENSIONAL SYSTEMS; INSULATOR-TRANSITION; BOSE-GAS; STATES;

D O I：

10.1103/PhysRevLett.121.030403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study phase transitions in a two dimensional weakly interacting Bose gas in a random potential at finite temperatures. We identify superfluid, normal fluid, and insulator phases and construct the phase diagram. At T = 0 one has a tricritical point where the three phases coexist. The truncation of the energy distribution at the trap barrier, which is a generic phenomenon in cold atom systems, limits the growth of the localization length and in contrast to the thermodynamic limit the insulator phase is present at any temperature.

引用

页数：6

共 47 条

[1]

Abrahams E., 2010, 50 YEARS ANDERSON LO, V26

[2]

Aleiner IL, 2010, NAT PHYS, V6, P900, DOI [10.1038/NPHYS1758, 10.1038/nphys1758]

[3]

Aleiner I. L., ARXIV09104534V1

[4] Quasiparticle lifetime in a finite system: A nonperturbative approach [J].

Altshuler, BL ;

Gefen, Y ;

Kamenev, A ;

Levitov, LS .

PHYSICAL REVIEW LETTERS, 1997, 78 (14) :2803-2806

[5] ABSENCE OF DIFFUSION IN CERTAIN RANDOM LATTICES [J].

ANDERSON, PW .

PHYSICAL REVIEW, 1958, 109 (05) :1492-1505

[6] Metal-insulator transition in a weakly interacting many-electron system with localized single-particle states [J].

Basko, DM ;

Aleiner, IL ;

Altshuler, BL .

ANNALS OF PHYSICS, 2006, 321 (05) :1126-1205

[7] Disorder-driven loss of phase coherence in a quasi-2D cold atom system [J].

Beeler, M. C. ;

Reed, M. E. W. ;

Hong, T. ;

Rolston, S. L. .

NEW JOURNAL OF PHYSICS, 2012, 14

[8]

BEREZINSKII VL, 1971, SOV PHYS JETP-USSR, V32, P493

[9] Direct observation of Anderson localization of matter waves in a controlled disorder [J].

Billy, Juliette ;

Josse, Vincent ;

Zuo, Zhanchun ;

Bernard, Alain ;

Hambrecht, Ben ;

Lugan, Pierre ;

Clement, David ;

Sanchez-Palencia, Laurent ;

Bouyer, Philippe ;

Aspect, Alain .

NATURE, 2008, 453 (7197) :891-894

[10] Coupling Identical one-dimensional Many-Body Localized Systems [J].

Bordia, Pranjal ;

Luschen, Henrik P. ;

Hodgman, Sean S. ;

Schreiber, Michael ;

Bloch, Immanuel ;

Schneider, Ulrich .

PHYSICAL REVIEW LETTERS, 2016, 116 (14)

← 1 2 3 4 5 →